<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>bootstrap</title>
    <link rel="stylesheet" href="css/bootstrap.min.css">
    
</head>
<body>
<button class="btn btn-success">
    <span class="glyphicon glyphicon-hourglass"></span>
    按钮
</button>
<button class="btn btn-lg">
    <i class="glyphicon glyphicon-screenshot"></i> 定位
</button>
<form action="">
    <div class="form-group has-success has-feedback">
        <div class="input-group">
            <span class="input-group-addon">@</span>
            <input type="text" class="form-control" id="inputGroupSuccess1" aria-describedby="inputGroupSuccess1Status">
        </div>
        <span class="glyphicon glyphicon-ok form-control-feedback" ></span>
    </div>
   
</form>
</body>
</html>